Cooling-tower



F- UHDE.

COOLING TOWER.

APPLICATION FILED on. 19, 1915.

Patented Dec. 6, 1921.

.wardly through the latter T Fi l 1.:1

FRITZ UHDE, 0E BRESLA'U, GERll IANY.

COOLING-TOWER.

saaoar.

Specification of Letters Patent.

Application-filed October 19, 1915. Serial No. 56,731.

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARCH 3, 1921, 41 STAT. L, 1313.)

To all whom it may concern: Be it known that T, FRITZ UHDE, a c tizen of the German Empire, residing Breslau,

in theKingdom of Prussia; in the German Empire, have invented new and useful Improvements in Cooling-Towers, or which the following is a specification.

The present invention relates to cooling towers of the class in which the waterto be cooled is showered downwardly by means of a distributing device of any convenient construction upon a suitable stack gridwork or the like and is caught at the foot thereof by nieansoit' suitable trays or the like disposed in any appropriate manner, in order to collect and pass the trickling water to a pit or reservoir situated at the bottom of the cooler. from whence it is carried off, whereas the cooling air enters at the bottom of the stack or gridwork into the cooler and passes upthrough the chimney.

The present invention refers more particularly to improvements in the construc tion and arrangement of the reservoir for collecting the cooled water. The object of the improvements'is to reduce the amount of work required for conveying or raising the water from the said collecting reservoir to the distributing means at the top of the stack or gridwork without preventing the free access of the cooling air into the cooler.

With this end in view my invention consists in certain-novel features of construction and combinations of parts as will be hereinafter fully'described with reference to the accompanying sheet of drawings in which:

Figure 1 is a diagrammatic vertical central section of a tower constructed in accordance with and embodying my invention;

Fig. 2 is a diagrammatic cross-sectional view of the trays collecting the trickling water; and Fig. 3 is a view similar to Fig. 2 showing a modification.

Similar letters of reference indicate corresponding parts throughout the several figures.

The water to be cooled enters the tower at a through a supply pipe 6, and is distributed by means of a perforated trough or troughs c of usual'construction in a downwardly directed shower upon a stack or gridwork (Z of any appropriate construction and escapes set up in: the lower part a of the tower. The water trickling down from the stack dis collected by two superposed rows of trays e, the trays of the upper row being arranged in staggered relation to those of the lower row; (Fig. 2) lected trickling water into a centrally disposed reservoir 7, from whence it passes are covered by inclined battle plates in which direct the tricklin water dro ing 6 a on them into the trays e.

The-flow of the air into and through the in the figures by arrows,

cooler is shown drawn 1n full lines.

Patented Dec. @6, 1921.

Alltrays e discharge the col- In cooling towers of the class in question I the air draft is efiected by the warming of the an: during its passage over and through the stack, and by the extension a The air draft requires therefore no special forcing means and the operation of the tower would not involve any expense were it not for "the raising oi": the water from the reservoir f to the top of the stack 05. This raising of the water requires in all cooler systems a considerable amount of work, as there are to be raised generally very great quantities of water, up to 6000- cubic meters. The total hei ht up to which the water results from the height of the stack or the like and the height of the free air access below the bottom of the said stack. The former depends upon the desired degree of cooling and amounts commonly to about 4 meters. The latter is determined by the area and form of the base of the stack or gridwork. On this supposition a chimney coolerhaving a square or polygonal base and an output or powerof about 3000 cubic meters .per hour requires a free height for the air admission of at least 3 meters in order that is to be raised,

the total head composed of the height of the trickling device andthe height of the air admission, as stated above. The advantage obtained hereby is very; considerable, as forexample in a chimney cooler having an output or power of about 3000 cubic meters per hour is saved a head of 3 meters wherei'rom results a constant saving of power of about 50 horse-powers. Of this advantage may be made use also in case the cooling water pump or the condenser is situated at a place higher than the ground on which the cooler is erected or more distant from the latter.

The improved reservoir 7 owing to its PIOPOItlOIlltGlY small dimensions in horizontal direction and its tapering form does not obstruct the free access of the, air into the cooler in any way. According to the amount of trickling water to be received the diameter or cross sectional area of the larger base of the reservoir preferably showing in section the form of a truncated hollow cone, may be varied as desired or required. The

smaller base or inlet opening of the reservoir is made only of such width as is necessary for receiving or taking the water discharged by the collecting trays.

As many changes might be made in the construction and relative arrangement of the differentparts without involving a departure from the spirit of my invention, I would have it understood,that I do not limit myself to theexact construction shown and described but consider myself at liberty to make such changes and alterations as fall within the scope of my invention.

I claim: y 1. In a cooling tower, the combination of arranged substantially horizontally at the lower end thereof, an air-inlet chamber at a trickling chamber and collecting troughs j the base of the trickling chamber, under said troughs, and a collecting receptacle projecting above the ground level to a point duce, without impeding the air-supply, a

head of water in the collecting receptacle of approximately the height of the air-inlet closely adjacent the troughs to thereby prochamber, to thereby assist the operation of 4 the circulating pump.

2. A cooling tower in which a collecting receptacle extends vertically through a bottom air-inlet chamber and has a greater sectional area at its lower part thanv at its upper part, to thereby enable said receptacle to take up a greater reserve of cooling water,

without impedingthe air-supply.

FRITZ UHDE.

Witnesses 1 C. RUTGIDTY, LOTTE LEWIN. 

